82681543 has 8 divisors (see below), whose sum is σ = 96798240. Its totient is φ = 69141120.

The previous prime is 82681541. The next prime is 82681549. The reversal of 82681543 is 34518628.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82681543 - 2¹ = 82681541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82681541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143758 + ... + 144331.

It is an arithmetic number, because the mean of its divisors is an integer number (12099780).

Almost surely, 2^82681543 is an apocalyptic number.

82681543 is a deficient number, since it is larger than the sum of its proper divisors (14116697).

82681543 is a wasteful number, since it uses less digits than its factorization.

82681543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288137.

The product of its digits is 46080, while the sum is 37.

The square root of 82681543 is about 9092.9391837843. The cubic root of 82681543 is about 435.6484678048.

It can be divided in two parts, 826 and 81543, that added together give a square (82369 = 287²).

The spelling of 82681543 in words is "eighty-two million, six hundred eighty-one thousand, five hundred forty-three".